WFront 0.4

WFront is a top-level request dispatcher, directing requests based on
the requested “Virtual Host”, listening port, URL path, or any
combination.

WFront can be used to:

host multiple WSGI-powered domains in a single process

emulate a mod_proxy, SCGI/FastCGI/AJP, mod_wsgi, or mod_python WSGI
setup under a simple development mode WSGI server,

simplify development and testing of complex, multi-server cluster
environments

or just perform simple path-based request dispatching

Mapping HTTP/1.0 requests to HTTP/1.1 Host:-style requests is supported
and is very flexible. WFront includes an environ manipulation toolkit
that allows for additions to and transformations of server-provided
environ data to be performed on each request.